help : capacitance to voltage transformation circuit

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antew

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voltage transformation

i'm doing a project on liquid level sensing and i have chosen to use capacitive liquid level sensing in which i have to change the variation of capacitance in to voltage.
so i want a capacitance to voltage transformation circuit.please help if u know one!
plz plz ur help means a lot!
 

capacitance to voltage

hi
u need a integrator switched capacitor and sigma delta feedback
looking this paper
 

capacitive electronic voltage sensor circuit

Typically, the problem with capacitive level sensing applications is rather interference suppression than high resolution. Thus a simple capacitive voltage divider with a synchrone rectifier for the sense signal and possibly an additional bandpass filter should be first choice to my opinion.
 

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